BLUES

Astrolabe Reef

#2D96CE

RGB 45, 150, 206 · HSL 201°, 64%, 49% · CMYK 78, 27, 0, 19

Astrolabe Reef is #2D96CE in HEX — rgb(45, 150, 206), hsl(201°, 64%, 49%), cmyk(78%, 27%, 0%, 19%).

Astrolabe Reef pulls into the mid-tone end of the blues spectrum — HSL 201°, 64%, 49%. The balanced saturation makes it confident without overpowering, and the hue reads cool. In interior projects it shines on bedrooms, bathrooms, home offices — for calm, focused environments. Reads best alongside warm white trim, oak or walnut, brass or matte black hardware.

Color Codes

HEX#2D96CE

RGB45, 150, 206

HSL201°, 64%, 49%

HSV201°, 78%, 81%

CMYK78, 27, 0, 19

Decimal2987726

CSS RGBrgb(45, 150, 206)

CSS HSLhsl(201, 64%, 49%)

Paint Matches — this color across 16 brands

Valspar

Blue Burst 4008-10B

ΔE 0.8 · #3097D0

PPG

Sorcerer 1240-5

ΔE 1.4 · #3398CE

Benjamin Moore

Clearest 2064-40

ΔE 1.7 · #3296CB

Dunn-Edwards

Splish Splash DE5844

ΔE 1.8 · #3194CE

Dulux

Boyzone S35H4

ΔE 2.9 · #2A9DD5

Sherwin-Williams

Dynamic Blue SW6958

ΔE 4.1 · #0192C6

Behr

Celebration Blue MQ4-57

ΔE 4.1 · #008DC8

Kilz

Hero Blue RD280-02

ΔE 6 · #1898C8

Vista Paint

Breathtaking Blue K-130

ΔE 7.5 · #569AD7

Kobra

Blue 29

ΔE 8.1 · #1882B4

RAL

Light Blue 5012

ΔE 9.1 · #3B83BD

Hallman-Lindsay

Acapulco Dive 639

ΔE 9.3 · #65A7DD

Farrow & Ball

St Giles Blue 280

ΔE 11.4 · #599EC4

IKEA

IKEA128 128

ΔE 18.9 · #4A72B0

Dutch Boy

Celestial Horizon DCP-0589

ΔE 24 · #8FA4BF

Colorhouse

Dream .06 Dream-06

ΔE 30.6 · #0E707B

Light Reflectance & Undertone

Light Reflectance Value (LRV)

27/100

Medium

0 · DarkLight · 100

Balanced reflectance — holds colour without washing out. Versatile for most rooms and the most forgiving range for true-to-chip results.

Undertone

TemperatureCool MasstoneBlue UndertoneViolet

Reads as a cool blue with a violet undertone showing through, especially in daylight. Pair trim and adjacent colours to either calm or amplify that undertone.

Color Theory

Complementary

#2D96CE

#CD652D

Analogous

#2DCDB5

#2D96CE

#2D45CD

Triadic

#2D96CE

#CD2D95

#95CD2D

Split-Complementary

#2D96CE

#CD2D45

#CDB52D

Tetradic

#2D96CE

#B52DCD

#CD652D

#45CD2D

Monochromatic

#113A4F

#1F678E

#2D96CE

#68B5DE

#A7D4EC

Rectangle

#2D96CE

#652DCD

#CD652D

#95CD2D

Compound

#2D96CE

#2D45CD

#CD652D

#CDB52D

Variations

Lighter

#54ABDA

#87BEDB

#BDD8E6

Darker

#2178A7

#145375

#0B3145

Saturation

#658495

#2D95CD

#169CE3

Interior Use

Best Rooms

bedrooms, bathrooms, home offices

Best Uses

main walls, ceilings, trim, cabinetry

Pairs With

warm white trim, oak or walnut, brass or matte black hardware

Accessibility (WCAG)

vs White

3.30:1

AA Large

vs Black

6.37:1

Deuteranopia

#2D96CE

#6886CF

Original → Simulated

Protanopia

#2D96CE

#8B8BC8

Original → Simulated

Tritanopia

#2D96CE

#19A096

Original → Simulated

Color Psychology

Focused · Cooling

Astrolabe Reef lowers the temperature of a room — useful in south-facing rooms that overheat visually, and in home offices where you want a clear head. Pair with warm wood and brass to keep it from reading clinical.

SymbolismTrust, depth, stability

PersonalityClear-headed, dependable, contemplative

focustrustcalmofficebedroomdepth

How it looks under different light

#619DB6

Warm Bulb 2700K

Incandescent / soft white LED — pulls colour toward yellow/amber.

#2D96CE

Daylight 5500K

Midday natural light or daylight-spec LED — closest to the paint chip.

#4EA2DA

Cool Bulb 6500K

Cool white LED / overcast daylight — pulls colour toward blue.

Pairs With

#E8EBED

Trim

Matched off-white

Same hue at 92% lightness — trim reads coordinated, not stark.

#F7F7F8

Ceiling

Whisper tint

Near-white with a hint of the hero's undertone — ceiling feels intentional.

#A45930

Accent

Complementary punch

Hue +180°, slightly muted for paint vs. screen — use on a door, frame, or single piece.

#574738

Floor

Walnut neutral

Warm mid-brown grounds the scheme regardless of hero hue.

Paint Info

Brand · Product Line

Benjamin Moore / Regal Select Interior

Recommended Finishes

Eggshell (walls) · Pearl (trim) · Matte (ceiling)

Eggshell hides imperfections on main walls while keeping the color rich; pearl on trim adds subtle sheen and easier cleaning; flat matte on ceilings prevents glare.

Best Surfaces

Primary walls · Cabinetry · Doors · Mouldings

Coverage & Dry Time

Typical coverage 350-400 sq ft per gallon over a primed surface.

Touch-dry in ~1 hour. Recoat after 4 hours. Full cure 7-14 days.

Primer

Standard primer is adequate.

Application Tip

Use a 9" microfiber roller on walls and a 2.5" angled sash brush for trim cuts. Two coats minimum for even depth.

Paint Calculator

Wall area (m²)

Coats

Coverage (m² / L)

You'll need

4.0 litres

1.06 US gallons · room for one touch-up coat. Buy slightly more to ensure single-batch match.

Code Snippets

CSS — color

color: #2D96CE;

CSS — background

background-color: #2D96CE;

CSS Variable

--color-astrolabe-reef: #2D96CE;

Tailwind v3 — config

colors: { 'astrolabe-reef': '#2D96CE' }

Tailwind — arbitrary

bg-[#2D96CE] text-[#2D96CE]

SCSS

$astrolabe-reef: #2D96CE;

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Built by DSGN.HOUSE Updated 2026

Our color tools run on our own catalogue of 26,000+ real paint colors across 16 brands — Benjamin Moore, Sherwin-Williams, Behr, Dulux, RAL and more — with the color math (HSL and CIELAB matching) computed in-house, not scraped from summaries. Every color you pick maps to a real, buyable paint with its code, so what you see here you can actually take to the store. We review and update these tools and their data regularly.

Created by Denis Kataev, founder of DSGN.HOUSE — a software engineer and digital entrepreneur building professional color-design tools for everyone.

Frequently Asked Questions

What color is #2D96CE?

#2D96CE is Astrolabe Reef, a mid-tone blue with a cool undertone.

Is #2D96CE warm or cool?

Astrolabe Reef reads cool, which influences how it interacts with surrounding tones and natural light.

What rooms work best with Astrolabe Reef?

Astrolabe Reef works well in bedrooms, bathrooms, home offices. Designers typically use it for main walls, ceilings, trim, cabinetry.

What colors pair well with Astrolabe Reef?

Astrolabe Reef pairs naturally with warm white trim, oak or walnut, brass or matte black hardware. Its complementary color is also a strong contrast option for accents.

Where can I download Astrolabe Reef?

You can download Astrolabe Reef on DSGN.HOUSE in 15 designer formats including CSS gradient, Figma, Procreate swatches, Tailwind config, Adobe ASE, SVG, and 4K wallpapers — all free.

What's the hex code for Astrolabe Reef?

The hex code is #2D96CE. In RGB it's 45, 150, 206, and in HSL it's 201°, 64%, 49%.

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